Apparatus for forming sand molds.



No. 682,!!3. A

- Patented Sept. 3, 1901. .1. B. NEESHAM.

APPARATUS FOR FORMING SAND HOLDS.

(Application filed Jan. 21, 1901.)

(No Model.)

4 Sheets-Sheet I 'ru Noam: rzrsns co, PnoTo-uma. w-sumomm n. a.

Patented Sept- 3, I901.

N0. 682,ll3.

J.B. NEESHAM.

APPARATUS FOR FORMING SAND HOLDS.

(Application filed Jan. 21., 1901.) (No Model.) 4 Sheets-Sheet 2.

Q 3 N n No. 682,||3. Patented Sept. 3, I90l.

J. BI NEESHAM.

APPARATUS FOR FOHMING SAND MOLDS. A ncauo filed Jan. 21, 1901.

(No Model.) 4 Sheets-Sheet 3.

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No. 682,!!3. Patented Sept. 3, HM.

J B. NEESHAM. I I APPARATUS FOR FORMING SAND MOLDS (Application filedJan. 21, 1901.) (No Model.) 4Sheets-Shaet 4.

UNITED STATES PATENT Ounce.

JOHN B. NEESI-IAM, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TOJAMES NEESHAM, OF ALLEGHENY, PENNSYLVANIA.

APPARATUS FOR FORMING SAND MOLDS.

SPECIFICATION forming part of Letters Patent No. 682,1 13, datedSeptember 3, 1901.

Application fi ed January 21, 1901. Serial No. 44,103. (No model.)

To (all whom it may concern.-

Be it known that 1, JOHN B. NEESHAM, a subject of the Queen of England,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inApparatus for Forming Sand Molds, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements inmolding-machines, and relates particularly to that class ofmolding-machines in which a vertical reciprocatory movement is impartedto the table carrying the flask to jar the same and firmly pack the sandin the flask in order to form the mold.

The invention has for its object to construct a machine of this classhaving in connection therewith stripping means by which the flaskcontaining the mold may be supported and the pattern stripped or loweredfrom the mold; furthermore, to construct a stripping means for thispurpose which may be adjusted to conform to different-sized flasks thatmay be used and which when in position on the machine will in no wiseinterfere with the convenient or successful operation of the latter.

Briefly described, my invention comprises a jarring-block upon which avertically-reciprocating table is mounted. The table is connected to aplunger. The vertical shaft is connected to the table and reciprocatesthrough the jarring-block to impart a vertical movement to the table.This plunger or vertical shaft is connected to a lifting-arm, and is inturn given an intermittent motion by means of which jarring of the sandis uniformly accomplished.

Furthermore, my invention comprises adjustable means carried by themachine for engaging the stripping-plate to support the same while thepattern is being stripped fro the mold.

My invention further consists in the novel details of construction andcombination of parts to be clearly described in the followingspecification and fully set forth in the claims.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this speeification,andwhereshaft or plunger.

in like numerals of reference indicate corresponding parts throughoutthe several views, in Which- Figure l is a side elevation of my improvedmolding-machine. Fig. 2 is a vertical longitudinal sectional view of thesame. Fig. 3 is a top plan view of a part of the lifting-arm, showingthe nut that engages the vertical Fig. 4c is a central trans- Versevertical sectional view of the jarringblock and table, showing a part ofone the arms and the pivoted supports for the flask, the guide-rods forthe lifting mechanism, and the vertical plunger or operating-shaft forthe table partly broken away. Fig. 5 is a detached top plan view of thelifting mechanism for elevating the flask to its support, where thepattern may be stripped therefrom. Fig. 6 is a detached end view of thelifting-arm, showing' the bracket, standard, and links for the sidelifting-levers. Fig. 7 is acentral transverse vertical sectional view ofthe flask with the mold formed therein and the pattern removedtherefrom, the latter being shown in side elevation. Fig. 8 is a centralvertical sectional View of the stuffing-box at the lower end of thejarring'block, showing a part of the vertically-reciprocating plunger orshaft in side elevation.

To put my invention into practice, I provide a jarring-block 1, which inthe accompanying drawings is shown of a tapering form, with the widebase provided with bolt-holes to receive bolts, by means of which thesame maybe securely fastened to a suitable base or support 2. Thisjarring-block is centrally bored, the bore being of a greater diameterin the base of the block, as shown at 3, and opening out to the side ofthe base in order to form a recess or space in which the lifting-arm maybe freely operated. The bore in this jarring-block extends upwardlythrough the same and is of a diameter slightly greater than that of thevertically-reciprocating plunger or shaft 5 that operates therein inorder that the latter may not engage the walls of the bore, and by thismeans materially reducing the friction. The shaft or plunger 5 0peratesthrough the gland or stuffing-box 6, arranged within the upper end ofthe jarring-block, and this shaft has rigidly secured to its upper end atable 7, which carries a pattern-plate 8, upon which the strippingplate9 is mounted. The pattern-plate 8 is preferably bolted to the table 7,as shown, and the heads of the bolts form a support for thestripping-plate 9. The pattern-plate has secured thereto by means of ascrew or bolt 10 or other suitable means a pattern 11, by means of whichthe mold is to be formed within the sand contained in the flask 12, thelatter being supported upon the strippingplate 9. The strippingplate isprovided with a central opening of sufficient size to receive thepattern 11. The vertical shaft or plunger 5 is provided near its lowerend with a shoulder 14, the reduced lower end 15 of said shaft extendingdownwardly below the baseplate or support 2. A transverse shaft 16 isjournaled in suitable bearings 17, mounted on the base-plate or support2, and mounted on this shaft .16 between the bearings 17 is a somewhat Lshaped lifting-arm 18 for im parting a vertically-reciprocating movementto the shaft or plunger 5, the table 7, and the pattern carried thereby.This is accomplished by providing the end of the arm 18 that projectsinto the recess 3 with brackets l9,which engage studs 20, carried onopposite sides of the nut 21. This nut is mounted upon the reducedportion 15 of the shaft or plunger 5 and engages the shoulder 14 of saidshaft or plunger. The free end of this lifting-arm 18 is bifurcated andhas journaled therein a shaft 22, upon which is mounted a follower Thisfollower is adapted to be engaged and an intermittent movement therebyimparted to the lifting-arm by means of a cam 24, which is mounted onthe operating-shaft 25, that maybe driven by belt over a pulley, (notshown,) or this shaft 25 may be driven in any suitable manner as maybefound convenient.

A pair of gooseneck standards 26 are mounted on the base or support, andbolted or otherwise rigidly secured to the upper ends of these standardsis a substantially A- shaped standard 28, having a hearing at its upperend to receive the shaft 29, which may be rigidly secured thereto by theset-screws 30, as shown. This shaft at opposite sides of the standard 28receives the upper ends of a pair of side links 31, these links at thelower ends being connected to short shafts 32, the inner ends of whichare connected to the yoke 33, that spans the lifting-arm 18. Thisconstruction is provided in order to give sufiicient clearance for thelifting-arm during its operation. The ends of the shaft 32 projectbeyond the side legs 31 in order that they may receive the ends of theside liftinglevers 34, these levers being provided at their oppositeends with suitable handles 35 and being connected to a pair ofguide-rods 36, arranged vertically of the jarring-block and operatingthrough this block and through the base, and at the upper ends extendinginto posts 37, provided therefor in the table.

form of adjustable connection, which I have shown in the drawings. Thisconnection consists of a strap 38, which encircles the guide-rods 36,the ends of the same being brought tightly together and fastened by aset-screw 39. This strap carries an outwardly-projecting stud or pin 40,which is adapted to engage in the eye provided therefor in the sidelifting-levers. The jarringblock is provided on opposite sides withsleeve-shaped enlargements 41, which form bearings to receive thesupporting-rods 42, held therein by set-screws 42', and upon saidsupporting-rods the arms 43 are adjustably supported. These arms areadapted to be moved vertically within the slides 43', in which they arerigidly held in the adjusted position by means of the set-screws 44. Theslides 43 are mounted on the rods or shafts 42 and are slidable thereon,so that the arms 43 may be moved toward or away from each other in orderto accommodate diflerent-sized flasks. These arms 43 have pivoted intheir upper ends a support 45, which during the operation of the machinelies normally in the position shown in Figs. 1, 2, 4, and 5 and in theposition where the stripping-plate 9 upon being elevated by the sidelifting-levers will engage these supports and move the same outwardly asthe flask passes upwardly between the supports until such plate haspassed out of engagement therewith, at which time upon the table beinglowered the stripping-plate will engage upon the shoulder and upperfaces 46 of the supports and be supported in this position while thetable and pattern continue to descend, thus supporting the flask whilethe pattern is stripped therefrom, as shown in Fig. 7 of the drawings.

As the bore of the jarring-block 1 is of a greater diameter than thevertically-operating shaft or plunger 5, so that the latter will notengage with the walls of the bore, I preferably provide below thejarring-block a suitable gland 47, which may be formed integral with thebase or support 2 or connected thereto and which has a stuffing-box 48to receive the lower end of the vertically-operating shaft or plunger 5in order to guide the same in its movement, the only friction upon thisshaft in this construction being where the same operates through thestuffing-box 48 and through the stuffing-box or gland 6 in the bore ofthe jarringblock, at the upper end'thereof.

In operation the flask 12 is placed in poin- Fig. 2 of the drawings, andthe sand or other material in which the mold is to be made is placedwithin the flask and the machine operated. Upon motion being imparted tothe drive-shaft 25 the cam 24, carried by said shaft, engages thefollower 23, depressing this end of the lifting-arm 1S and elevating theopposite end thereof, and by reason of the nut 21 engaging on theshoulder 14 elevating the vertical plunger or shaft, which carries withit the table, pattern, stripping-plate, and flask, and as the cam 24passes out of engagement with the follower 23 the support for thevertically-reciprocating parts is thereby removed, and these partsdescend and the table striking against the top of the jarring-block jarsthe sand within the flask, so as to form the mold according to the shapeof the pattern being used. \Vhen the mold has been completed and it isdesired to strip the pattern therefrom, the side levers 34 are raised,which carries the guide-rods 36 upwardly, these guide-rods carryingtherewith the table and parts mounted thereon, and as thestripping-plate comes in contact with the pivoted supports thesesupports are swung backward on their pivot-pins sufficiently to permitthe stripping-plate to pass above the same, when they return to theirnormalpositions,in which theywill be engaged by the stripping-plate asthe table is lowered, and thus support the flask while the pattern isstripped therefrom.

It will be observed that the side handles being adjustable they may beplaced in a position convenient for the operator, and the slides 43being adjustable upon the side rods 42, together with the arms 43, beingadjustable vertically in the slides, that these arms may be adjustedeither toward or away from each other, or vertically in the latter case,

. to place the supporting-dogs at a different height, as maybe requiredby the size of flask being employed.

To insure the return of the dogs or supports 45 to the supportingposition aft-er the flask has passed above the same, I provide a spring49, that may be fastened to the arm 43 in a position where it will beengaged by the support as the latter is moved outward and exert itstension against thesupport to return the same to its normal orsupporting position.

Having thus fully described myinvention, what I claim as new, and desireto secure by Letters Patent, is

1. In a molding-machine, the combination of a jarring-block, a verticalreciprocating plunger or shaft operating therein, said shaft having areduced portion thereon forming a shoulder, a table carried by the saidplunger or shaft above the jarring-block and adapted to engage the upperend of the latter, a stripping-plate carried by the said table, apattern connected thereto and projecting through the stripping-plate, anL-shaped lifting-arm secured in suitable bearings, brackets madeintegral with one end of said arm, an aper tured nut secured betweensaid brackets,said nut being mounted upon the said reduced portion andengaging the said shoulder thereon,

the other end of said lifting-arm being bifurcated, a follower mountedin said bifurcation, a drive-shaft, and means actuated by thedrive-shaft for engagement with the arm to actuate the same and toimpart an intermittent motion to the plunger or shaft and table,substantially as described.

2. In a molding-machine, the combination of a jarring-block, a verticalreciprocating plunger orshaft operating therein, said shaft having areduced portion thereon forming a shoulder, atable carried by the saidplunger or shaft above the jarring-block and adapted to engage the upperend of the latter, a stripping-plate carried by the said table, apattern connected thereto and projectingthrough the stripping-plate, anL-shaped lifting-arm secured in suitable bearings, brackets madeintegral with one end of said arm, an apertu red nut secured betweensaid brackets, said nut being mounted upon the said reduced portion andengaging the said shoulder thereon, the other end of said lifting-armbeing bifurcated, a follower mounted in said bifurcation, a drive-shaft,and a cam on the driveshaft for engagement with the follower on the saidlifting-arm to actuate the same and to impart an intermittent motion tothe plun ger or shaft and table, substantially as described.

3. In a molding-machine, the combination ofajarring-block,a plunger orshaft arranged to reciprocate vertically therein, a table carried bysaid shaft above the jarring-block, a pattern connected to said .table,a strippingplate mounted on said table to receive the flask in which themold is to be formed, a lifting-arm engaging the plunger or shaft, a drive-shaft, means actuated by the said driveshaft, for giving said arman intermittent motion, and adjustable means for engagement with thestripping-plate to hold the flask and stripping-plate suspended whilethe pattern is stripped therefrom and the said stripping-plate is out ofengagement with the said table, substantially as described.

4. In a molding-machine, the combination with a jarring-block, a plungeror shaft arranged to operate vertically therein, a table carried by thesaid shaft above the jarringblock, a pattern connected to said table, aflask mounted on said table, and a liftingarm engaging said shaft, adrive-shaft, a cam mounted thereon, and adjustable means carried by thejarring-block for engagement with the stripping-plate to hold the flaskand stripping-plate suspended while the pattern 'is stripped from theflask, substantially as described.

5. In combination, a jarring-block, a shaft arranged to reciprocatetherein, a table carried by said shaft, a pattern mounted on the table,a flask carried by the table, an operating-shaft, a lifting-arm foractuating the said IIO first-named shaft, means carried by theopcrating-shaft for imparting motion to the table and shaft, andadjustable-means carried by the jarring-block for engagement with thestripping-plate to hold the flask and stripping-plate suspended whilethe pattern is stripped from the flask, substantially as described.

6. In a molding-machine, the combination with a jarring-block, aplungeror shaft, a ta ble carried by the plunger or shaft, an L- shapedlifting-arm engaging the shaft for actuating the same, anoperating-shaft, means actuated by the operating-shaft forintermittently operating said lifting-arm, and adjustable means forholding the flask out of engagement with the table when the pattern isstripped from the flask, substantially as described.

7. In a device of the character described, a base, a jarring-blockmounted thereon, said jarring-block being provided with a central bore,a shaft or plunger mounted therein, a table carried by said shaft orplunger, an L- shaped arm, said arm being secured in suitable bearings,and movably connected to said shaft or plunger, an operating-shaft, acam carried thereby, said L-shaped arm being bifurcated, a followermounted in said bifurcation and adapted to be engaged by the said cam,in combination with rods or shafts secured on opposite sides of the saidjarringblock, adjustable arms mounted thereon, supports secured to saidarms, guide-rods connected to the said table and means for operating thesaid guide-rods, substantially as described.

8. In a moldingrmachine, a base, a jarringblock mounted thereon, saidjarring-block having a central bore formed therein, a shaft or plungermounted therein, a table carried thereby, an L-shaped arm, said armbeing secured in suitable bearings and movably connected to said shaftor plunger, an operatingshaft, means actuated by said shaft for givingsaid arm an intermittent motion, in combination with rods or shaftssecured on opposite sides of the said jarring-block, adjustable armsmounted on said rods or shafts, supports secured to said arms,guide-rods connected to the said table, and levers connected to saidguide-rods, substantially as described.

9. In a molding-machine, a base, a jarringblock mounted thereon, saidjarring-block being provided with a central bore, a shaft or plungermounted therein, a table carried by said shaft or plunger, a lifting-armsecured in suitable bearings and connected to said shaft or plunger, anoperating-shaft, a cam carried thereby to actuate said lifting-arm, incombination with rods or shafts secured on the said jarring-block, armsmounted on said rods or shafts, supports secured to said arms,guide-rods connected to the said table, and levers connected to saidguide-rods, sub stantially as described.

10. In a device of the character described, the combination of ajarring-block provided with a central bore, a shaft or plunger mountedtherein, a table carried thereby, aliftingarm connected to said shaft orplunger at its lower end, said arm being secured in suitable bearings,an operating-shaft, means for actuating the said shaft by giving thesaid arm an intermittent motion, rods or shafts carried by saidjarring-block on opposite sides, ad- 3' ustable arms mounted on saidrods or shafts, supports secured to said arms, and guide-rods connectedto the said table, and levers pivotally secured to the said guide-rods,substantially as described.

11. In a molding-machine, abase, ajarringblock mounted thereon, saidjarring-block having a central bore formed therein, a shaft or plungermounted therein, a table carried thereby, said table being provided withperforated posts, an L-shaped arm, said arm being pivoted on said baseand movably connected to said shaft or plunger, an operatingshaft, meansactuated by said shaft for giving said arm an intermittent motion, rodsor shafts secured on said jarring-block, adj ustable arms mounted onsaid rods or shafts, supports secured to said arms, guide -rods mountedin the said perforated posts, and means for actuating said guide rods,substantially as described.

12. In a molding-machine, the combination of a jarring-block providedwith a central bore, a shaft arranged to reciprocate therein, a tablecarried by said shaft, a pattern carried by the table, afiask mountedthereon, an L-shaped lifting-arm connected to said shaft, a drive-shaft,means actuated by the drive-shaft for giving said arm an intermittentmotion, adjustable means carried by the jarring-block for engagementwith the stripping-plate to hold the flask and strippingplate suspendedwhile the pattern is stripped from the mold, and means carried by thejarring-block for stripping said pattern from the mold, substantially asdescribed.

In testimony whereof I affix my signature in the presence of twowitnesses.

JOHN B. NEESHAM.

Witnesses:

JOHN NOLAND, A. M. WILSON.

